static unsigned int z80_in_neo(unsigned int port)
{
int porth = (port>>8);
port &= 0xff;
switch (port)
{
case 0x0:
// printf("Reading command %x\n", cmd_latch);
cpu_set_irq_line(0, IRQ_LINE_NMI, CLEAR_LINE);
return cmd_latch;
break;
case 0x4:
return YM2610Read(0, 0);
break;
case 0x5:
return YM2610Read(0, 1);
break;
case 0x6:
return YM2610Read(0, 2);
break;
case 0x8: // 2k window at f000
nbnkf = (porth&0x7f)*0x800;
cpu_setbank(4, &prgrom[nbnkf]);
// printf("2k bank: porth = %x res = %x\n", porth, nbnkf);
return 0;
break;
case 0x9: // 4k window at e000
nbnke = (porth&0x3f)*0x1000;
cpu_setbank(3, &prgrom[nbnke]);
// printf("4k bank: porth = %x res = %x\n", porth, nbnke);
return 0;
break;
case 0xa: // 8k window at c000
nbnkc = (porth&0x1f)*0x2000;
cpu_setbank(2, &prgrom[nbnkc]);
// printf("8k bank: porth = %x res = %x\n", porth, nbnkc);
return 0;
break;
case 0xb: // 16k window at 8000
nbnk8 = (porth&0xf)*0x4000;
cpu_setbank(1, &prgrom[nbnk8]);
// printf("16k bank: porth = %x res = %x\n", porth, nbnk8);
return 0;
break;
}
// printf("Unknown read from port %x (PC=%x)\n", port, _z80_get_reg(Z80_REG_PC));
return 0;
}
int YM2610_status_port_1_B_r( int offset ) {
return YM2610Read(1,2);
}
int YM2610_read_port_1_r( int offset ){
return YM2610Read(1,1);
}
int YM2610_status_port_0_B_r( int offset )
{
//if(errorlog) fprintf(errorlog,"PC %04x: 2610 S0B=%02X\n",cpu_get_pc(),YM2610Read(0,2));
return YM2610Read(0,2);
}
